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List:       llvm-dev
Subject:    [LLVMdev] how to let memory dependency analysis use globalsmodref
From:       Jin Guoliang <jingl1345 () gmail ! com>
Date:       2012-07-31 22:42:14
Message-ID: CAK41ufMK_ty9tAfjNwGhBE8gLCqBT8oa-wKCe8dDcc9ddkQUYA () mail ! gmail ! com
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Hi there,

I am doing:

opt -print-memdeps ./test.bc -analyze -globalsmodref-aa

by adding globalsmodref-aa, I am hoping that globalsmodref alias analysis
will be used. However, it does not turn out to be so. I found this out by
adding some "errs() << " into the source code for that alias analysis.

So my question is what should I do to let memory dependency analysis use
globalsmodref alias analysis.

I have tried other alias analysis and found out that if basic-aa and tbaa
can be utilized, but not -libcall-aa -globalsmodref-aa.

I also found out that -libcall-aa -globalsmodref-aa has member function
runOnFunction and runOnModule respectively, but basic-aa and tbaa do not.

Again, my question is what should I do to let memory dependency analysis
use globalsmodref alias analysis.

Thanks,
Guoliang

[Attachment #5 (text/html)]

Hi there,<br><br>I am doing:<br><br>opt -print-memdeps ./test.bc -analyze -=
globalsmodref-aa<br><br>by adding globalsmodref-aa, I am hoping that global=
smodref alias analysis will be used. However, it does not turn out to be so=
. I found this out by adding some &quot;errs() &lt;&lt; &quot; into the sou=
rce code for that alias analysis.<br>
<br>So my question is what should I do to let memory dependency analysis us=
e globalsmodref alias analysis.<br><br>I have tried other alias analysis an=
d found out that if basic-aa and tbaa can be utilized, but not -libcall-aa =
-globalsmodref-aa.<br>
<br>I also found out that -libcall-aa -globalsmodref-aa has member function=
 runOnFunction and runOnModule respectively, but basic-aa and tbaa do not.<=
br><br>Again, my question is what should I do to let memory dependency anal=
ysis use globalsmodref alias analysis.<br>
<br>Thanks,<br>Guoliang<br>


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